Electrode containing two different metals (e.g. platinum and ruthenium) on its surface (e.g. to modify its electrocatalytic properties).
Source:
PAC, 2020, 92, 641. 'Terminology of Electrochemical Methods of Analysis (IUPAC Recommendations 2019)' on page 660 (https://doi.org/10.1515/pac-2018-0109)